.exp {
  width: 100%;
  height: 1300px;
  background-color: #f3f3f3;
  background-image: url(../img/grey_bg.jpg);
  background-size: 120%;
  position: relative;
}

.exp > .plate {
  position: absolute;
  top: -195px;
  left: 0;
  z-index: 3;
}

.exp > .plate2 {
  position: absolute;
  bottom: -170px;
  right: 0;
  z-index: 3;
}

.exp > .common {
  height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
}

.exp > .common > .exp-title {
  text-align: center;
  color: #333;
}

.exp > .common > .img-wrap {
  height: 390px;
  width: inherit;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
}

.exp > .common > .img-wrap > .img {
  display: inline-block;
  height: inherit;
  flex: 1;
  position: relative;
  background-size: 150%;
}

.exp > .common > .img-wrap > .img > .label {
  display: inline-block;
  width: 300px;
  height: 300px;
  text-align: center;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.76);
  position: absolute;
  left: 50%;
  top: 50%;
  margin-top: -150px;
  margin-left: -150px;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
  z-index: 2;
  opacity: 0;
}

.exp > .common > .img-wrap > .img > .label:hover {
  opacity: 1;
  transition: opacity 0.2s ease-in-out;
}

.exp > .common > .img-wrap > .img > .label > .btn {
  padding: 10px 20px;
}
